Recently proposed rare decays Zef1f»2V (with V=W or Z and f1,2 ordinary fermions and the forward-backward asymmetry are found to be sensitive diagnostic tests for the gauge coupling ratio gR/gL in left-right symmetric models (SU2L×SU2R×U1(B-L)). At projected luminosities of the CERN Large Hadron Collider and the Superconducting Super Collider, gR/gL can be determined statistically to 1% for MZe1 TeV. The absence of related decays We+f1f»2W+ would be a clean signature that We couples to right-handed currents. Once gR/gL is determined, the ratio MZe/MWe and the decays ZeW+W-(We+W+Z) provide probes for the symmetry breaking sector.
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)